Response of an anaerobic fluidized bed reactor treating ice-cream wastewater to organic, hydraulic, temperature and pH shocks
Response of an anaerobic fluidized bed reactor treating ice-cream wastewater to organic, hydraulic, temperature and pH shocks
An anaerobic fluidized bed reactor, operating at 35° C, was used to treat ice-cream wastewater with an influent chemical oxygen demand (COD) of 5.2 g l?1. Start-up of the reactor was achieved within 30 days by use of a regime that included stepped increases in influent COD and methanol substitution of the substrate. A steady state was achieved with 94.4% COD reduction at an organic COD loading rate of 15.6 g l?1 d?1 (HRT 8 h). This rate is somewhat faster than those achieved in previously reported studies. The reactor was subjected to transient changes in temperature, pH, influent flow-rate and COD for 6 and 12 h periods. The quality of the effluent deteriorated under these shock load conditions but returned to steady-state values within 6–16 h upon restoring normal conditions. The stability of the reactor under unfavourable process conditions is discussed.
anaerobic fluidized bed reactor, organic shock, hydraulic shock, temperature shock, pH shock, ice-cream wastewater
251-259
Borja, Rafael
68c613c6-300d-4663-b6ec-7f9357b7221b
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
1 May 1995
Borja, Rafael
68c613c6-300d-4663-b6ec-7f9357b7221b
Banks, Charles J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Borja, Rafael and Banks, Charles J.
(1995)
Response of an anaerobic fluidized bed reactor treating ice-cream wastewater to organic, hydraulic, temperature and pH shocks.
Journal of Biotechnology, 39 (3), .
(doi:10.1016/0168-1656(95)00021-H).
Abstract
An anaerobic fluidized bed reactor, operating at 35° C, was used to treat ice-cream wastewater with an influent chemical oxygen demand (COD) of 5.2 g l?1. Start-up of the reactor was achieved within 30 days by use of a regime that included stepped increases in influent COD and methanol substitution of the substrate. A steady state was achieved with 94.4% COD reduction at an organic COD loading rate of 15.6 g l?1 d?1 (HRT 8 h). This rate is somewhat faster than those achieved in previously reported studies. The reactor was subjected to transient changes in temperature, pH, influent flow-rate and COD for 6 and 12 h periods. The quality of the effluent deteriorated under these shock load conditions but returned to steady-state values within 6–16 h upon restoring normal conditions. The stability of the reactor under unfavourable process conditions is discussed.
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Published date: 1 May 1995
Keywords:
anaerobic fluidized bed reactor, organic shock, hydraulic shock, temperature shock, pH shock, ice-cream wastewater
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Local EPrints ID: 75302
URI: http://eprints.soton.ac.uk/id/eprint/75302
ISSN: 0168-1656
PURE UUID: aaacfac1-890b-4906-af3d-c04e24cd8b25
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:39
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Author:
Rafael Borja
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